2906041021 has 6 divisors (see below), whose sum is σ = 3146778330. Its totient is φ = 2682499248.

The previous prime is 2906040959. The next prime is 2906041031. The reversal of 2906041021 is 1201406092.

It can be written as a sum of positive squares in 3 ways, for example, as 100220121 + 2805820900 = 10011^2 + 52970^2 .

It is not a de Polignac number, because 2906041021 - 2¹⁵ = 2906008253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2906041031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8597586 + ... + 8597923.

It is an arithmetic number, because the mean of its divisors is an integer number (524463055).

Almost surely, 2^2906041021 is an apocalyptic number.

It is an amenable number.

2906041021 is a deficient number, since it is larger than the sum of its proper divisors (240737309).

2906041021 is a wasteful number, since it uses less digits than its factorization.

2906041021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17195535 (or 17195522 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2906041021 is about 53907.7083634613. The cubic root of 2906041021 is about 1427.0326622782.

The spelling of 2906041021 in words is "two billion, nine hundred six million, forty-one thousand, twenty-one".